130 PROCEEDINGS OP THE ACADEMY OP [Feb., 



which the species is found and feeds. As individuals near maturity 

 this color pattern is lost, the dull coloration of the female type sup- 

 planting it. The two mesa adults have the hoary suffusion much 

 stronger and more extensive than in the female type, the limbs and the 

 greater portion of the body being much lighter than in the type. The 

 cephalic horns are well indicated in all the immature specimens. 



A series of seven females from Pecos, Reeves County, Texas, in the 

 Academy collection are referred to this species, although rather smaller 

 and slenderer, the latter difference probably being due to the fact 

 that all have been immersed for some time in a liquid preservative and 

 in consequence there has been considerable shrivelling. The essential 

 characters, i.e., width of head, horns and form of femoral spines and 

 apex of abdomen, are the same as in the El Paso specimens. 



ACRIDIDJE. 



TELMATETTIX Hancock. 

 Telmatettix aztecus (Saussure). 



In a canyon in the Florida Mountains, at about 5,100 feet elevation, 

 along a little rill of water which trickled a few dozen yards over a 

 rock slope and thin top soil, this species was found quite plentiful on 

 July 19. Specimens were noticed only on such spots as had been 

 moistened by the water, a series of fourteen males and eleven females 

 being taken in a short time. The insects were active and flew rapidly 

 about when disturbed. There is a considerable range of color varia- 

 tion in the lot, many shades of browns and grays being represented, 

 with several decidedly rufous individuals, and a number with com- 

 plete or incomplete "saddle" of blackish brown caudad of the broadest 

 portion of the pronotum. In one specimen the cephalic and median 

 limbs and the ventral margin of the lateral lobes of the pronotum are 

 ringed or spotted with brilliant red. All the series have the pronotum 

 elongate. 



PARATETTIX Bolivar. 

 Paratettix mexioanus (Saussure). 



A male of this species was taken on irrigated land along the Rio 

 Grande, atjEl Paso, July 10, and a female was captured on cultivated 

 ground at Albuquerque, September 14. 



ACRYDIUM Geoffroy. 

 Acrydium crassum (Morse). 



A single male of this species was taken at Cloudcroft, July 15, being 

 beaten from vegetation on the steep hillside of James Canyon at an 



